Thanks for playing and posting the video!
I know the game doesn't do a great job explaining it but you can select a Rebel and Tip him so he moves to a neighbor building once per turn by using the TIP stamp.
I also feel that the game is a bit too hard, i'll try to make a quick update to tweak the number of letters per day, and avoid rebels to spawn to close to each other. I'll try to update it tonight.
Again, thanks for playing it!